Roller window screen



Patented Sept. v2120, 1932 Erica WILLIAM W. WATSON, or :reI/IEsroWN, NEWlYORK ROLLER WINDOW SCREEN Applicationled September 14, 1928. Serial No.306,051.

This `invention relates to rollerwindow screens and more particularlyvto limprovements in the details of construction thereof.

In itspreferred embodiment, this invention 'JLB contemplates theprovision Vof a metal roller window screen, Vthe construction of whichprovides for greater eiflciency, adaptability -and controlled operation.A further contemplation of this invention, is the provision of improvedstructural details by reasonof which the device is made practicallyimpervious tothe usual Wear and disorder `encouu' tered inoperatingscreens of this type. e, l Heretofore, in themanufactureofroller window screens, insucient attention has beencentered `upon details Vwhich go to make up a.. device of vthis kind. Asa result of this, the screens now on themarket do not V meet therequirements eXacted ofthem land 20,V constant replacement thereof isnecessary.

. Applicant discloses, in the following specification, a roller windowscreen structure in which is provided a spring' actuated rollervmounted-upon ball bearings which thus insure freeand even action of `thescreen when moved from one position to another. A suitable latchV andlocking device formed inthe Vmetal guide channels and the operating bar,Y

controls the spring actuated roller aswelll as l preventing raisingAofthe screen from the outside either by design or inadvertence.-

The principal object of this invention is the provision of a rollerwindow screencontained within a case supported in the head of '35 thewindow frame ,and which is adapted to be L readily 4withdrawn therefromto completely screen a givenwindow.

Another object of this invention is the provision of a screen supportingroller having 'means by which toadjustv the tension of the spring whichacts tol retract the screen.'

f A further object of Ythis invention is the provision of a screensupportingroller mountedupon ball bearings which assure a free'and evenaction of the screen. y

A still further object of this f invention the provision of an operatingbar having an automatic latch for ordinary operation and a positivelockrwhich, when the screenis `fully extended, prevents undesiredliftingof the screen from the eXterior'of the window.k

Other andfurther objects of this" invention'will appear from aconsiderationof the Afollowing specification taken iu'connection 55 withthe accompanying drawing, and in Awhich y 1, v. Y '.Fig. 1 is a frontelevation of"awindow frame having secured theretoand inV partiallyVextended position one modification of the present invention; l Fig. 2is an enlarged sectional viewand disf closes the details oflconstruction of ythe screen rollerand actuating spring; o y FigQ-B vis aview similar Vto that of Fig. 2 65 showing. the actuating spring in theposition it assumes when the screen Vis rfully extended; Fig. 4 is .anend view of the'structure Yshown in- Fig.' 3 being taken on the linea-4:of that ligure and shows `Ythe device by which initial L v or anyvarying` degree of tension of the'jactuating spring is obtained. YReferring to the drawing, thereference numeral 10 is employed todesignate a window f frame in which is mounted,within or adjacent 7,.

the head jamb 11, a roll case 12. Secured to the vertical jambs oftheframe 10 in accorde ance withiany one of the showings of the Y drawing,are metal or wood guide channels 18 and 14. Extending` from the rollcase 12, f asshownfin Fig. 1, is a wire mesh screen 15, having securedat the lower edge thereof an operatingbar 16, through the use of which.the screen may be moved to or Yfrom the roll case 12 as desired. Y f yThe roll case 12, as shown Vin Figs. 2,3, and 4 of the-drawing, isformed from a recytangularly .shaped strip, f the longitudinal edges ofwhich are properly :spaced to provide passagefor the screenltherethroughan YThe ends of th-e-rollcaseare provided with projectingtongues 18 which are ,adapted to engage endV plates 19 throughlsuitableopenings and are headed over to secure the `endV plates to thecasewhereby to create a rigidinfi and substantial box-like structure.V.The'end plates 19, which are flanged on three sides y tojenclosetheends of the case 12have formed suitable openings therethrough and it isby means of these tongues and the screws 23 that the roll case 12 issecured to the vertical v jambs of the frame. The lower horizontal 5wall 25 of the case 12 terminates in a roll 'edge 26 spaced .a slightdistance from the vertical wall 27 of the caself In order to vsupportthevaxlef30, `which c a-rries the screen rewinding mechanism, the endplates 19 are provided with centrally located indented portions 32 (Fig.4) Two olset ribs 33V are formed in the circumferential walls of theportion 32 being diametrically opposite each otherl andfor.'a'fpurposel-- about to4 be described., A centrally located flangedopening 34 is provided in thel de`- pressed portion 32 and is of adiameter suflicient to permit the free entrance of the end of the axle30. YThe ends of the; axle 30 are provided with slots 35 adaptedtobeengaged by 'tonguesformed'upon lock washers 36. Each Alock washer 36`is provided with twodiametrically.` opposite engaging surfaces 37which, when itis in positionupon'the axle '30, permits rotation of saidlaxle in but one direction, When the axle isrotated in a ncounterclock-wise direction','byfmeans o f a tool adaptedftoit the slot35, thecontacting surfaces 37of the loclrfwasher 36 ride out- 30 wardly uponthe raised rib surfacesf33of the 'indented portion 32. "However, whenit'jis attempted to rotate the axle in a clock-wise direction thesurfacesV 37 ofthe washers instantly engage the'ribs 334therebypreventing any 'move1nent in this direction. j i Adjacent the indentedportions 32 of the plates 19 and mounted'upon each end of the axle 30vare ball bearings 40. Supported by fthe bearings 40V isa cylindricalroller 41, the bearings 40 being pressed' uponj the axle 30 and theroller 41 also being pressed into engagement with lsaid bearing.Between'the lend plates 19 and the ends of the roller 41 'are thrustwashers 42, the purpose of which is to prevent the'roller from cominginto con- .tact with the plates '19. 'These washers have jjanpopeningtherethrough by which to mount "them upon the'indented portions 32. Itis *for retraction ofthe screen, a `certain amount of end playwilloccurandjwithout the aid ofthe Vwashers 42, the eiiicient operationof kof which being dependent uponthe length of the spring 45.v Thespring 45` en'cases the sleeve 43one end thereofy extending beyond meansof a strap 46, welded to' or otherwise v suitably fastened to saidaxle,'w`hic'h strap isV provided with` a loop 47 to 4whichthevendrection.

obvious'that as the roller rotates in one di- A rectionor the other topermitthe extension roll case,ran axle supported inthe ends ofl-`vsaidcase, a roller'enclosingfsaid axle, bear- N the roller would begreatly impaired. Loosely 'a engaging the 'axle '30'is a slee'ye 43, thelength rection said washers slide over said ribs aus .spring 45 will ybetightened and reduced in 75 diameter, the sleeve 43 preventing reductionbeyond the-elastic limit of said spring.

Y While only one modification of the roll case p andseveral applicationsto window frame structures have been shown and described in conjunctionwith applicants invention, it is obvious that other modifications oradaptations maybe made without departing from th'e'spirit and scope ofthe invention as set forth in the following claims.l is. 35' Having thusset forthmy invention,what

I claim.- as new and forwhich I desirefpro- Vte'ction by Letters Patentis:

1. In a roller windowv screen structure,"fa roll case, a spring roller,spring tensioningeo means, VVsaid means comprising a roller axle, vaflock washer secured to said axle, and means in saidcase engaging saidwasher whereby7 to prevent rotation of said axle in but one di- 2. In aro1ler`window screen structure, a roll case, an end plate in said casehaving an-opening therethrough, a roller supporting 'axle insaidvopening, alock washer secured to said axle'a'djacent saidplate,fand.00

`ribs in said plate cooperating with said washer whereby to' preventrotation of said'ax'le `in but one direction.

3; In a roller window screen structure,a

Vroll case, Va spring actuated roller in saidi105 case, springtensioning means comprising ribs formed 1n the end plates 'of said case,an

axle projecting through said roller andl supported' in said plates, lockwashers secured to said axle adjacent the ends thereof, said' 3110washers'being adapted, when rotated in one direction,'to engage saidribs whereby to prevent Vrotation ofsaid axle.

V4. In a roller window screen `strueture,a 115 ings mounted onsaid'axle, said bearings supportingsaid roller, ribs formed in said caseends, lock washers keyed'to said axle andengageable with saidribs, andaspring enciricling said axle, said springbeing attached at opposite endsto said axle and said roller whereby ,when said axle is vrotated'in onediing an increase in the tension of said spring. 5,. In a roller windowscreen. structure, a

roll case, a reciprocable roller in saidv case, Y a unidirectionalrotating means in said roller, Y most coil ofthe spring is fastened.V"Ihe other?.

65Lendf of the'spring'45 is.` engaged with the4 said` meanscomprisinguan axle, bearings, mountedjin and supporting saidroller,'aV130 sleeve on said axle, and a spring attached to said axleand said roller, ribs formed in' the ends of said case and lock Washerssecured to said axle, said Washers being adapted to engage said ribswhereby totension said spring by preventing rotation of said axle Withsaid v roller when said roller is manually rotated.

6. In a roller screen structure, a roll case,

end plates in said case, a roller supporting axle mounted on said endplates, ribs in said plates, and means on said axle cooperating Withsaid ribs to limit' the rotation of said axle to one direction. t

In testimony whereof I have aixed my signature.

WILLIAM W. WATSON.

zo v Gill

